public class TestComparable {
public static void main(String args[]) {
test();
test2();
}
public static void test() {
......
List<Cat> listCat1 = new ArrayList<Cat>();
Cat cat1 = new Cat(34, "hehe");
Cat cat2 = new Cat(12, "haha");
Cat cat3 = new Cat(23, "leizhimin");
Cat cat4 = new Cat(13, "lavasoft");
listCat1.add(cat1);
listCat1.add(cat2);
listCat1.add(cat3);
......
System.out.println("调用Collections.sort(List<T> list)listCat2升序排序:");
Collections.sort(listCat1);
System.out.println("降序排列元素:");
Collections.sort(listCat1, Collections.reverseOrder());
System.out.println("Collections.reverse 从列表中最后一个元素开始输出:");
Collections.reverse(listCat1);
......
}
/**
* 针对数组的排序
*/
public static void test2() {
String[] strArray = new String[] { "z", "a", "C" };
System.out.println("数组转换为列表");
List<String> list = Arrays.asList(strArray);
System.out.println("顺序排序列表");
Collections.sort(list);
System.out
.println("按String实现的Comparator对象String.CASE_INSENSITIVE_ORDER排序----");
Collections.sort(list, String.CASE_INSENSITIVE_ORDER);
System.out.println("倒序排序列表");
Collections.sort(list, Collections.reverseOrder());
......
}
}